A lamp that can concentrate light has two brackets, two shade holders, a shade, two sockets and two illuminating elements. The shade holders are attached respectively to the brackets. The shade is mounted between the shade holders and has a tubular body, a slit and an extension. The tubular body is made...http://www.google.fr/patents/US20050013133?utm_source=gb-gplus-shareBrevet US20050013133 - Lamp with a capability of concentrating light
